Genetic structure of natural and broodstock populations of the long-spined sea urchin, Diadema antillarum, throughout the Florida Keys by Luke M Chandler, Linda J Walters, William C Sharp, Eric A HoffmanResearch from the University of Central Florida and the Florida Fish and Wildlife Conservation Commission indicates that genetic structure of long-spined sea urchins in the Florida Reef Tract reveal little genetic differentiation of populations from Dry Tortugas through Biscayne National Park, indicating that captive-bred urchins could be used to re-establish healthy urchin populations in the Florida Keys.